Oil-baffle plate



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'N. P. DAVIS.

OIL BAFFLE PLATE.

Jan 1923;

FILED MAR. 26,1921- Patented its. aa, ieaa.

NELON P. DAVIS, OF TERRY, MISSISSIPPI.

OIL-BAFFLE PLATE.

Application filed March 26, 1921. Serial No. 455,871.

T 0 aZZ whom it may concern Be it known that l, NELoN P. DAVIS, acitizen oi the United Fitates, residing at Terry, in the county ofHinds, State oi? Mi sissippi, have invented certain new and usefulImprovements in Oil-Battle Plates; and I do hereby declare the followingto be a full, clear, and exact description of the in.- vention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

This invention relates to oil battle devices to be used in connectionwith internal combustion or other engines employingthe splash system oflubrication, the primary object of the invention being to provide meansof Simplified and improved nature for preventing an excess oi: oil beingthrown from the crank case to the engine cylinders,

yet permitting of suiiicient oil being dis tributed to the latter toinsure thorough and proper lubrication. a

A further and particular object of the invention is to provide baiiieplates for use in connection with the motor for the purposes specified,which areof extremely simple construction and of inexpensivemanufacture, which may be readily applied to engines now in use withoutalteration or change in any of the construction of the latter; which areadaptable to engines of various types, which areot such construction asto be formed and properly fitted to irregularities in each enginecasing, and which may be readily applied to the motor of any ordinarymechanism.

Withthese objects in view, together with others which will appear as thedescription proceeds, the invention resides in the novel construction,combination and arrangement of parts, all as will be described morefully hereinafter, illustrated in the drawings, and particularly pointedout in the claims.

In the drawings:

Figure 1 is a vertical transverse sectional view taken through an engineof conventional design and illustrating the application thereto'oit abaffleplate embodying the invention.

Figure 2 is a'tragmentary sectional view taken horizontally through apart of the engine casing and illustrating the baiile plate in plan.

Figure 3 is a detail perspective view' of one of the battle plates.

Figure 4 I is a fragmentary sectional view taken vertically through aportion of a conventional engine and showing certain wings of the baiileplate bent upwardly and away -troni the cam shaft.

Figure 5 is a fragmentary sectionaldetail View on the line 5-5 of Figure2.

Referring now more particularly to the drawing, .5 indicates generallythe casing of the engine, the latter in the present instance being aninternal combustion motor, but it will be understood that the device ofmy invention is not necessarily limited to use in connection with suchmotors as it may be very eiiiectively employed with other types ofengines and power plants. This casing includes the cylinder portion 6containing piston 7 the latter being connected by pitman 8 with an armof crank shaft 9, disposed within the crank case of the motor, all aswill be readily understood. As the motor operates, the oil in the wellatthe bottom of crank case is thrown or splashed upwardly so as tolubricate the pistons and cylinders, cam shaft 10 and other movableparts enclosed by the casing, and it very often happens that the oil,thus splashed is too freely distributed within the casing] wherebyexcess amounts of oil are permitted to enter the combustion chamber ofthe cylinder and thereby impede the power of the engine and foul thespark plugs. The device of my invention includes a battle plate orplates disposed between the pistons of the engine and the crank shaft,to intercept an appreciable quantity of: the oit splashed. by thecranksand deflect such oil back into the oil well, thus overcoming thepossibility ofthe cylinders becoming fouled'withlubrieating-oil.

-The battle plates of my invention com prise baseor body portionsindicated at 11,, formed preferably of a substantially heavy rigidmetal, one end of the plate being down-- turned or offset, as at 12, toreceive retaining screws or bolts 18 for rigidly securing the base toone of the'inner walls oi the enginecasing. In the present instance. thebase portion 11 is secured to that sideof the casing opposite to the camshaft. and

the said member 11 is provided with transversely disposed" slots ornotches lfi spaced apart proper distances to receive and looselyaccommodate the pitrnen connecting the pistons with the cranks otcranlrshaft 9. The

apart Proper distancesin'order that 'a re Cit cess may be provided foreach of the pitmen of the engine. The base or body 11 may be made in onecontinuous strip, it desired, extending longitudinally throughout thelength of the -engine casing, or the body may be made in two or moresections, all of similar construction, and fitted together and boltedwithin the casing so as to have the appearance and function of onecontinuous base. t will-be observed that the width of the base plate issuch that the free ends thereof terminate an appreciable distanceinwardly from the cam shaft and its associated mechanism.

Projecting inwardly into each of the slots or notches 14- of the base orbody and outwardly from the free end oi the latter are deflector membersindicated at 15. These deflector members are made of flexible material,such as thin tin, and project into the slots 14 a comparatively shortdistance. The deflector members 15 at the free edges of the plate are ofsuch length as to extend approximately to the wall of the engine casingopposite to which the base members 11 are bolted and the said enddeflectors or baflies, indicated at 16, are of such width as to meet attheir adjacent edges, as shown. By constructing the deflector portionsof the baliles in the manner specified, it is obvious that they may beshaped so as to closely fit with projections or other irregularities inthe engine casing or about any of the movable parts of the motor,certain portions of the deflectors being cut or slitted as at 17 tofacilitate the bending and fitting operation. The battle membersdefining the slots 14 are to be bent downwardly in the general directionof the crank case, and have their tree edges disposed so as tocomfortably clear the pit- .men 8, allowing tree unimpeded movement ofthe latter and yet lying close to the sides of the same. The enddeflectors 16 are shaped so as to engage or substantially engage withthe remote wall of the engine casing, and as the lateral edges of thesedeflector members meet each other it is obvious that great quantities ofoil will be prevented be ing thrown to the upper part of the casing.

At the outer ends of the base or body members 11, baflle fingers orplates 18 are provided, the same being flexible or pliable to adaptthemselves to any irregularities in the end walls of the engine casing.The flexible deflector members may be formed of any suitable pliablematerial, such, as has been heretofore stated, as thin tin, and thesedeflector members may be made in any number of pieces or sections asdesired. It may be toundexpedient, however, to construct these balflemembers all in one piece, as by stamping, and then securing the same.uponthe base or body members 11. The inner ends of the metal platesconstituting the deflectors, Wlll constitute a connector for the variousportions, and the body of the dcflector members may be secured to thebase 11 by means of rivets 20.

By constructing the baflle members in the manner specified, the basemembers 11 will possess suilicient rigidity to properly support theflexible baflie or deflector elements, and the latter may be so shapedas to provide substantially a partition wall between the crank case andthe lower portion of the engine cylinders, suflicient room being left orprovided for the free unimpeded operation of the movable parts of theengine. The downturned edges oi the deflectors 15 will catch the oilthrown upwardly by the cranks, and will direct it down into the oilwell. The end deflector 16 will prevent oil being thrown against the camshaft and gaining access to the engine cylinders, while the said camshaft will receive suflicient lubrication from the drip of the enginecylinders. Should it be found that the flexible deflector members toosnugly accommodate the movable parts, thus preventing proper lubricationof the engine parts, they may be bent or deflected backwards so as toallow more space for the lubricant to pass.

By the use of a battle device so constructed, it is obvious that the oilpressure in the lubrieating system of the engine may be raisedappreciably, to insure proper lubrication of all of the bearings, andyet such increased pressure will not increase the amount of lubricantdelivered to the pistons and cylii'idcrs. By thus limiting the amount ofoil supplied to the cylinders and pistons, it is apparent that leakageof the oil past the piston rings and into the upper portions of thecylinders, in excessive quantities, will be precluded, whereby :t'oulingol the cvlinders and the spark plugs, and acciunulatious of excess oilupon the piston heads will be overcome.

\Vhile the above is a description of the invention in its preferredform, it will be understood that the invention is not to be limitedthereto, as various changes in the minor ('letails of construction and,arrangement of parts may be resorted to without departing from thespirit of the invention as defined by the claims.

lVhat is claimed is:

1. In baflle device for engines, a base plate formed of substantiallyrigid material and having an attaching flange along one edge, and beingtransversely slotted, a sheet of flexible material carried by said plateand being transversely slotted in registry with the slotted portion ofthe base plate, the walls of the slots of said sheet being formed withaugularly extending deflector blades projecting into the slots of thebase plate, the said sheet projecting beyond certain edges of said baseplate and being extended angularly.

2. As an article of manufacture, a ba-flie l l O In testimony whereof, Iaffix my signature, in the presence of two Witnesses.

NELON P. DAVIS.

Witnesses:

E. M. ROWAN, L. C. DAVIS.

